1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60079-6Explosive atmospheres - Part 6: Equipment protection by oil immersion oUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PER
2、MISSION FROM ULNational Differences ForUL 60079-6Explosive atmospheres - Part 6: Equipment protection by oil immersion oEdition: 3Edition Date: July 24, 2009This revision to ANSI/UL 60079-6 is being issued to update the title page to reflect thereaffirmation of ANSI approval. No changes in requireme
3、nts have been made.As noted in the Commitment for Amendments statement located on the back side of the titlepage, UL and ISA are committed to updating this bi-national standard jointly. However, therevision pages dated November 22, 2013 will not be issued by ISA as revision pages but as anupdate to
4、their standard.This document provides a single listing of the National Differences included in the UL adoption ofthe corresponding IEC standard.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechan
5、ical photocopying, recording, or otherwisewithout prior permission of UL.UL provides this standards document as is without warranty of any kind, either expressed or implied,including but not limited to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liabl
6、e for any special, incidental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinability to use this standards document, even if UL or an authorized UL representative has been advisedof the possibi
7、lity of such damage. In no event shall ULs liability for any damage ever exceed the pricepaid for this standards document, regardless of the form of the claim.Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expen
8、se, liability, damage, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purchasers computer system.Copyright Underwriters Laboratories Inc.NOVEMBER 22, 2013NATIONAL DIFFERENCES FOR UL UL 6
9、0079-62UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National Differences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, UL uses the no
10、tations indicated below to identify national difference type, andthese types are additionally noted in this document. The standard may not use all types of thesedeviations.D1 - These are deviations which are based on basic safety principles and requirements, elimination ofwhich would compromise safe
11、ty for U.S. consumers and users of products.D2 - These are deviations based on safety practices. These are deviations for IEC requirements that maybe acceptable, but adopting the IEC requirements would require considerable retesting or redesign on themanufacturers part.DC - These are deviations base
12、d on the component standards and will not be deleted until a particularcomponent standard is harmonized with the IEC component standard.DE - These are deviations based on editorial comments or corrections.DR - These are deviations based on the national regulatory requirements.Each national differenc
13、e contains a description of what the national difference entails. Typically one of thefollowing words is used to explain how the text of the national difference is to be applied to the base IECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause, table,figure, o
14、r annex. Addition is not meant to include adding select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause,table, figure, or annex without any replacement text.Modification / Modify - A modification is an altering of the existi
15、ng base IEC text such as theaddition, replacement or deletion of certain words or the replacement of an entire clause,subclause, table, figure, or annex of the base IEC text.NOVEMBER 22, 2013 NATIONAL DIFFERENCES FOR UL UL 60079-6 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDI
16、STRIBUTION WITHOUT PERMISSION FROM ULNational Differences1DV.1 DR Modification of Clause 1 first paragraph as follows:1DV.1.1 Replace “part of IEC 60079” with “standard”.1DV.2 DR Addition of 1DV.2.1 and 1DV.2.21DV.2.1 The U.S. version of IEC 60079-6 does not include requirements for Group Ielectrica
17、l apparatus. Requirements for Group I electrical apparatus included in thisdocument are to be considered omitted in all instances where they appear.1DV.2.2 Where references are made to IEC 60079 standards, the referenced requirementsfound in these standards shall apply as modified by any applicable
18、U.S. NationalDifferences.2DV.1 DR Modification of Clause 2 title to replace as follows:Delete “Normative”.2DV.2 DR Modification of Clause 2 to replace with the following references:ASTM D3487, IEC 60156,Insulating liquids Determination of the breakdown voltage at power frequency TestmethodMineral In
19、sulating Oil Used in Electrical ApparatusIEC 60247,Insulating liquids Measurement of relative permittivity, dielectric dissipation factor (tan) and d.c. resistivityIEC 60296,Fluids for electrotechnical applications Unused mineral insulating oils for transformersand switchgearIEC 60529,Degrees of pro
20、tection provided by enclosures (IP Code)Amendment 1 (1999)IEC 60588-2,Askarels for transformers and capacitors Part 2: Test methodsIEC 60836,Specifications for unused silicone insulating liquids for electrotechnical purposesISO 2719,Determination of flash point Pensky-Martens closed cup methodNOVEMB
21、ER 22, 2013NATIONAL DIFFERENCES FOR UL UL 60079-64UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULISO 3016,Petroleum oils Determination of pour pointISO 3104,Petroleum products Transparent and opaque liquids Determination of kinematicviscosity
22、 and calculation of dynamic viscosityUL 2225,Cables and Cable-Fittings for Use in Hazardous (Classified) LocationsUL 60079-0,Electrical Apparatus for Explosive Gas Atmospheres Part 0: General RequirementsUL 60079-7,Electrical Apparatus for Explosive Gas Atmospheres Part 7: Increased Safety eUL 60079
23、-11,Electrical apparatus for explosive gas atmospheres Part 11: Intrinsic safety “i”UL 60079-15,Electrical apparatus for explosive gas atmospheres Part 15: Construction, test andmarking of type of protection “n” electrical apparatus3.2DV.1 DR Modification of Clause 3.2 to replace as follows:Add “, A
24、STM D3487,” after “IEC 60296”.4.1DV.1 DR Modification of Clause 4.1 to replace with the following:Electrical circuits and components intended to be immersed in the oil shall not be ignitioncapable in normal operation in accordance with UL 60079-15 or UL 60079-11. Theenclosure of oil immersed “o” equ
25、ipment shall be in accordance with UL 60079-0.4.2DV.1 DR Modification of Clause 4.2 first paragraph to replace as follows:Add “or ASTM D3487” after “IEC 60296”.4.3DV.1 D2 Delete Clause 4.3This clause does not apply.4.8DV.1 DR Modification of Clause 4.8 to replace with the following:With the exceptio
26、n of conductors meeting the clearance and creepage distancerequirements of UL 60079-7, or forming part of a circuit complying with the safetyrequirements of UL 60079-11 with level of protection “ia” or “ib”, live parts of electricalequipment shall be immersed to a depth of not less than 25 mm below
27、the surface of theprotective liquid, at the minimum permissible protective liquid level.Equipment, components and conductors not complying with the above requirement shallbe suitable for Class 1, Zone 0 or Zone 1 with an appropriate group and temperature class.NOVEMBER 22, 2013 NATIONAL DIFFERENCES
28、FOR UL UL 60079-6 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.13DV.1 DR Modification of Clause 4.13 to replace with the following:Terminations used for the entry of electrical conductors into an oil immersion “o”enclosure shall be prote
29、cted using a suitable type of protection such as “d”, “e”, or “i”.The connection between the terminations and the oil immersion “o” enclosure shall be anintegral part of the enclosure.When a cable provides the direct entry of conductors into oil immersion “o” equipment oran Ex component, the cable g
30、land shall comply with UL 2225 and shall not be capable ofbeing removed without obvious damage to the oil immersion “o” enclosure.5.1.2DV.1 DR Modification of Clause 5.1.2 first paragraph, to replace as follows:Add “protective liquid” after “permissible”.5.1.3DV.1 DR Modification of Clause 5.1.3 fir
31、st paragraph, to replace as follows:Add “permissible” after “maximum”.6DV.1 DR Modification of Clause 6 item c) to replace with the following:6DV.1.1 in accordance with 4.6, minimum and maximum permissible protective liquidlevels; alternatively, an adjacent marking shall be provided which fully specifies the fillingconditions;7DV.1 DR Modification of Clause 7 first bullet item as follows:7DV.1.1 Replace “fluid” with “liquid”.A.2.1.2DV.1 DR Modification of Clause A.2.1.2 NOTE as follows:Replace “winning with “mining”.NOVEMBER 22, 2013NATIONAL DIFFERENCES FOR UL UL 60079-66
